Rear Brake Disc/Parking Adjustment Options

[trdproven]

Are there any adjustments that need to be made if you put on a new caliper I noticed these celicas use a duo servo mechanical drum parking brake design, where the cable goes into from behind the rotor vice externally. is the only rear parking brake adjustment in the center glove only? I keep reading you adjust something in the rotor first and then move on to the adjustment in the center glove. is that an adjustment in the rotor where that rubber plug is? I noticed when I looked into the rubber plug, its not very clear what to adjust there, the toyota service manual is not very detailed. it says to adjust something so that pads basically lock the rotor, the description sounds like drum brakes but it was listed under disc brakes and drum brake shoes had its only paragraph. Just wondering if anyone knew. I'm used to the hondas rear brake set up.

This what the manual says:
Disc Brakes
Raise and support rear of vehicle. Remove rear wheel. Release
parking brake. Remove adjustment hole plug from rear rotor. Turn
adjuster until parking brake shoes lock rotor. Back off adjuster 8
notches.

This post has been edited by trdproven: Jul 7, 2012 - 2:56 AM

[Galcobar]

The rotor has a hole in it large enough to stick a flathead screwdriver through. This is different from the two bolt holes which you can use to push the rotor off of the hub. The hole in the rotor should be lined up with the largest hole in the face of the hub to allow access to the adjuster wheel.

Once the rotor is in place, turn the rotor so that the access hole is at the bottom. This will allow you to catch the adjuster wheel.

Temporarily install two or three lug nuts to ensure the rotor is properly positioned on the hub.

Turn the adjuster and expand the shoes until the rotor disc locks. With a flathead screwdriver in the wheel, move your hand down to expand the shoes, and move your hand up to pull the shoes back.

Return the adjuster eight notches.

Now you can adjust the position of the parking brake lever. Four to seven clicks of the lever should produce full engagement, requiring 796 N (44.1 lbf) of force. If otherwise, you must adjust the relationship between the lever and the cable.

To do so, remove the centre console. Loosen the top lock nut, then adjust the lower nut until travel is correct. Torque the lock nut with 5.4 N–m (48 in.–lbf) of force.

The last step is a repeated road-speed adjustment -- the parking brake is self-adjusting.

Drive the vehicle at about 50 km/h (30 mph), then with the parking brake release button pushed in, pull on the lever with 88 N (19.8 lbf) of force. Hold the lever and drive the vehicle for about 400 meters (0.25 mile), then release. Repeat two or three more times -- once or twice is probably sufficient if neither the rotor nor shoes are new.

This post has been edited by Galcobar: Jul 8, 2012 - 3:27 AM